AC betekent Voor Christus. Dus VC Misschien Victoria (AC/DC betekent Voor Christus, Na Christus, mocht het interesseren) 
Ik dacht dat AD Anno Dominum (en dat is weer AC) betekende en dus na Christus en voor Christus BC.
Maar ik zie nu al op internet dat AC staat (behalve voor wisselstroom)voor:
in electricity, the abbreviation of alternatingcurrent 
in history, Latin ante Christum, that is to say before Christ ;see Anno Domini 
in medicine, a chemotherapy regime comprising adriamycin and cyclophosphamide , see AC chemotherapy 
Atlantic College , one of the ten United World Colleges 
an automobile brand, see AC Cars 
adult contemporary music 
a misprint of Ac, the chemical symbol for actinium 
an Anonymous Coward on Slashdot 
the postnominal letters for the Companion in the Order of Australia 
Air Canada 
air conditioning 
Alt Cataclius, "AfterCataclysm" on the Dragonlance Timeline.
in Dungeons and Dragons, the abbreviation of ArmorClass.
Asheron's Call, a fantasy MMORPG 
Algoma Central Railway ( AAR reporting mark AC)
In British politics AC, which stands for AelodCynulliad is the Welsh language equivalent of AssemblyMember or AM , denoting a member of the National Assembly for Wales.